You can slow oxidation down by taking in large amounts of antioxidant nutrients - vitamin A from carrots and tomatoes, vitamin C from fruits and vegetables, vitamin E from seeds and nuts and anthocyanidins from berries and red grapes. As well as eating these foods it' s well worth supplementing antioxidants. Another key element is to put on a sunscreen every time you go outdoors on a hot, sunny day. This does mean sacrificing the desire to look ' tanned and healthy' , but it will keep you looking younger, longer. Moisturising the skin, and drinking plenty of water, keep the skin supple by preventing dehydration, but they don' t really stop the deeper oxidant damage that leads to wrinkles. Most antioxidant-rich skin creams don' t penetrate deep enough into the skin to nourish the collagen, which is what stops wrinkles.